#define _CRT_SECURE_NO_WARNINGS 1
#include<stdio.h>

int main()
{
	char x = 0;
	while (scanf("%c", &x) != EOF)
	{
		getchar();
		printf("%c\n", x + 32);
	}
	//int a = 0xABCDEF;
	//printf("%15d\n", a);
	return 0;
}